CN106567148B - A kind of production method of dry method flat acrylic - Google Patents
A kind of production method of dry method flat acrylic Download PDFInfo
- Publication number
- CN106567148B CN106567148B CN201510655929.2A CN201510655929A CN106567148B CN 106567148 B CN106567148 B CN 106567148B CN 201510655929 A CN201510655929 A CN 201510655929A CN 106567148 B CN106567148 B CN 106567148B
- Authority
- CN
- China
- Prior art keywords
- spinneret
- path
- stoste
- temperature
- production method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/40—Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
A kind of production method of dry method flat acrylic, belongs to the preparation method technical field of acrylic fiber.It is characterized by comprising following steps: heater heats stoste, and is filtered to the stoste after heating；Booster pump is pressurized filtered stoste, and spinneret (1) spinneret is conveyed to after metering device；The stoste that spinneret (1) sprays enters path, and rapid evaporation under the action of the high-temperature gas through being passed through in path forms the as-spun fibre of flat cross section；As-spun fibre drawing-off after washing, obtains acrylic fiber, and drawing temperature is 65 ~ 99 DEG C；Acrylic fiber after drawing-off is cut off after drying, is then packed in storage.The spinneret of the production method of dry method flat acrylic of the invention can be stable the acrylic fiber produced flatness and be 5 ~ 7, increase differential kind, the flat acrylic fiber added value of product produced is high, there is preferable economic and social benefit.
Description
Technical field
A kind of production method of dry method flat acrylic, belongs to the preparation method technical field of acrylic fiber, and in particular to one
The production method of kind dry method flat acrylic.
Background technique
Acrylic fibers are trade name of the polyacrylonitrile limit in China, and acrylic fibers have excellent performance, soft warm, elasticity
Good, fast light and weather-resistant property is particularly excellent.Acrylic fiber is made generally in staple fiber, can it is pure spinning or with it is wool blended, be used for
Textile, knitwear, woollen blanket, tent, curtain and filter cloth processed etc. since its property is close to wool, therefore have the title of " synthetic wool ".
Although acrylic fibers commonly referred to as polyacrylonitrile fibre, wherein acrylonitrile (habit claims the first monomer) only accounts for 90% ~ 94%,
Second comonomer accounts for 5% ~ 8%, and Third monomer accounts for 0.3% ~ 2%, this is because fiber made of single acrylonitrile polymer lacks flexibility,
Embrittlement.It dyes also extremely difficult.In order to overcome these defects of polyacrylonitrile, people are made using the method that second comonomer is added
Fiber is submissive；Third monomer is added, improves colouring power.The preparation method of general acrylic fibers is that polyacrylonitrile is dissolved in dimethyl methyl
In amide equal solvent, then obtain through wet process or dry spinning.
Flat acrylic fiber is that a kind of section is rectangle or the acrylic fiber close to rectangle, and it is special that flat acrylic fiber has
Gloss, bulkiness and anti-pilling property, and have good post-processing effect.Feel, which exactly likes, touches feather and animal fur,
Therefore the ornament materials etc. being mainly used as in artificial fur, push toy, interior decoration and car.3D(is at present
3.33dtext) flat acrylic fiber relies primarily on based on import.
Summary of the invention
The technical problem to be solved by the present invention is overcome the deficiencies of the prior art and provide one kind can stably produce it is flat
The production method of the high dry method flat acrylic of the acrylic fiber and the operation is stable, product quality that Pingdu is 5 ~ 7.
The technical solution adopted by the present invention to solve the technical problems is: the production method of the dry method flat acrylic, special
Sign is: including spinneret, multiple spinneret orifices are arranged in interval on spinneret, and spinneret orifice is that spinneret is arranged in feed the blind of side
Hole, the bottom of spinneret orifice offer multiple micropores through spinneret discharging side, and multiple micropores are located along the same line, including
Following steps:
Stoste heating: heater is heated to 120 ~ 130 DEG C to stoste, and is filtered to the stoste after heating；
Spinneret: booster pump is pressurized 450 ~ 700kpa to filtered stoste, and spinneret spray is conveyed to after metering device
Silk；
Evaporation drying: the stoste that spinneret sprays enters path, under the action of the high-temperature gas being passed through in path quickly
Evaporation, forms the as-spun fibre of flat cross section；
Drawing-off: as-spun fibre drawing-off after washing is washed, acrylic fiber is obtained, drawing temperature is 65 ~ 99 DEG C；
Packaging and warehousing: the acrylic fiber after drawing-off is cut off after drying, is then packed in storage.
Preferably, the heater heats stoste by steam.
Preferably, the heater is pharoid, and the inner tube steam pressure of pharoid is 156 ~ 176kpa,
Outer tube steam pressure is 56 ~ 86kpa.
Preferably, the high-temperature gas includes main nitrogen and secondary nitrogen, and the temperature of main nitrogen is 340 ~ 350 DEG C, pressure
For 365 ~ 385mmH2O is passed through by the import in the path；The temperature of secondary nitrogen is 95 ~ 105 DEG C, and pressure is 90 ~ 110 mmH2O,
It is passed through by the outlet in the path.
Preferably, the path includes gas chamber, centrum, upper path top and upper 4th area of path lower part, the temperature in 4th area
It is respectively as follows: 330 ~ 340 degrees Celsius, 210 ~ 220 degrees Celsius, 170 ~ 180 degrees Celsius and 140 ~ 150 degrees Celsius.
Preferably, the metering device is metering pump, and the frequency of metering pump is 29Hz.
Preferably, for the as-spun fibre by traction feeding machine drawing-off, the frequency for drawing feeding machine is 33.5Hz, draw ratio
It is 4.5.
Preferably, each spinneret orifice and three microporous connectivities.
Preferably, the micropore is the linear long hole of both ends arc-shaped.
Preferably, the spinneret orifice has 1160 groups.
Compared with prior art, beneficial effect possessed by the production method of dry method flat acrylic of the invention is:
1, the spinneret of the production method of this dry method flat acrylic using pore openings fiber by being bonded after swelling, more
Fibres bond together, has achieved the purpose that change fibre section, to produce the various flat nitriles of the dry method met the requirements
Synthetic fibre fiber；The production method can be stable produce flatness be 5 ~ 7 acrylic fiber, moreover it is possible to not according to spinneret template
Together, on same production line, conventional dry acrylic fibers and dry method flat acrylic can be produced simultaneously by adjusting technological parameter, increased
Differential kind, the flat acrylic fiber added value of product produced is high, there is a preferable economic and social benefit.
2, heater heats stoste by steam, facilitates control heating temperature, moreover it is possible to prevent from introducing into stoste
Impurity.
3, heater is pharoid, and inner tube steam and outer tube steam respectively add the stoste of the stoste of inner ring and outer ring
Heat, make inner ring stoste with after outer ring stoste spinneret enter path in formation as-spun fibre speed it is identical.
4, from path, import is passed through main nitrogen, the water rapid evaporation in the stoste sprayed through spinneret can be made to be formed nascent
Fiber, secondary nitrogen are passed through from path outlet, can prevent the liquid in path from liquefying, hinder the production of as-spun fibre.
5, the temperature in 4th area of path is declined in gradient by import to outlet, to being kept the temperature in path, and with main nitrogen
Cooling is consistent, prevents the heat of main nitrogen from causing damages due to heat transmitting.
6, metering pump can adjust the flow of stoste as needed, easy to adjust.
7, traction feeding machine can carry out drawing-off to as-spun fibre, so that the thickness of acrylic fiber is adjusted, and its adjusting side
Just.
8, each spinneret orifice and three microporous connectivities, ensure that the flatness of acrylic fiber reaches requirement.
9, micropore is the linear long hole that both ends are arc-shaped, facilitates the acrylic fiber of ejection to bond, facilitates machining flat
The acrylic fiber of shape.
Detailed description of the invention
Fig. 1 is the schematic top plan view for producing the spinneret of dry acrylic fiber flat fiber.
Fig. 2 is the schematic cross-sectional view in the direction A-A in Fig. 1.
Fig. 3 is the partial enlarged view in Fig. 1 at B.
Fig. 4 is the schematic cross-sectional view in the direction C-C in Fig. 3.
In figure: 1, spinneret 2, spinneret orifice 3, micropore.
Specific embodiment
Fig. 1 ~ 4 are highly preferred embodiment of the present invention, and 1 ~ 4 the present invention will be further described with reference to the accompanying drawing.
A kind of production method of dry method flat acrylic, including spinneret 1, multiple spinneret orifices 2 are arranged in interval on spinneret 1,
Spinneret 2 is the blind hole that spinneret 1 is arranged in and feeds side, and the bottom of spinneret orifice 2 offers multiple through the discharging of spinneret 1 one
The micropore 3 of side, multiple micropores 3 are located along the same line, include the following steps:
Stoste heating: heater is heated to 120 ~ 130 DEG C to stoste, and is filtered to the stoste after heating；
Spinneret: booster pump is pressurized 450 ~ 700kpa to filtered stoste, and the spray of spinneret 1 is conveyed to after metering device
Silk；
Evaporation drying: the stoste that spinneret 1 sprays enters path, under the action of the high-temperature gas being passed through in path quickly
Evaporation, forms the as-spun fibre of flat cross section；
Drawing-off: as-spun fibre drawing-off after washing is washed, acrylic fiber is obtained, drawing temperature is 65 ~ 99 DEG C；
Packaging and warehousing: the acrylic fiber after drawing-off is cut off after drying, is then packed in storage.
The spinneret 1 of the production method of the dry method flat acrylic using micropore 3 export fiber by being bonded after swelling, more
Fibres bond together, has achieved the purpose that change fibre section, to produce the various flat nitriles of the dry method met the requirements
Synthetic fibre fiber；The production method can be stable produce flatness be 5 ~ 7 acrylic fiber, moreover it is possible to not according to spinneret template
Together, on same production line, conventional dry acrylic fibers and dry method flat acrylic can be produced simultaneously by adjusting technological parameter, increased
Differential kind, the flat acrylic fiber added value of product produced is high, there is a preferable economic and social benefit.
Embodiment 1
As shown in Figure 1 and 2: this is used to produce on the spinneret 1 of dry acrylic fiber flat fiber and is equipped at intervals with multiple spinneret orifices 2,
Spinneret orifice 2 is the blind hole that spinneret 1 is arranged in and feeds side, and the bottom of spinneret orifice 2 offers multiple through the discharging of spinneret 1 one
The micropore 3 of side, raw material through on spinneret 1 spinneret orifice 2 and micropore 3 spray after form flat acrylic fiber.
The interior edge of spinneret 1 and outer are equipped with upward continuous flange, and the bottom surface of flange and spinneret 1 is mutually hung down
Directly.The flange of outer is equipped with the flanging away from 1 center of circle of spinneret, and the flange on interior edge is equipped with towards 1 center of circle of spinneret
The flanging on flanging, the flanging of outer and interior edge is parallel with the bottom surface of spinneret 1.Flanging is mainly used for spinneret 1
Installation, and facilitate the sealing of spinneret 1.
As shown in Figure 3: each spinneret orifice 2 is connected with three micropores 3, and three micropores 3 are located along the same line.Micropore
3 be the long hole of linear, and the both ends of micropore 3 are arc-shaped.
Raw material exports fiber by bonding after swelling after the ejection of micropore 3, using micropore 3, and plurality of fibers is bonded together,
Achieve the purpose that change fibre section, to produce the various dry method flat acrylic fibers for meeting and needing.
Spinneret orifice 2 is evenly arranged on multiple concentric circles of spinneret 1, and spinneret orifice 2 is radially uniformly distributed, and each diameter is corresponding same
The number of spinneret orifice 2 on heart circle increases with the increase of diameter.The line for three micropores 3 being connected to each spinneret orifice 2 with
The tangent line of 1 concentric circles of spinneret locating for spinneret orifice 2 is overlapped.
As shown in Figure 4: the charging side of spinneret 1 is arranged in spinneret orifice 2, and the discharging one of spinneret 1 is arranged in micropore 3
Side, the depth of micropore 3 are the half of 2 depth of spinneret orifice, and each spinneret orifice 2 is connected with three micropores 3.
Spinneret orifice 2 is the long hole of linear, and three micropores 3 being connected to each spinneret orifice 2 are equal along the long axis of spinneret orifice 2
Cloth.Spinneret orifice 2 is to pour out the material gradually smaller taper in side by feeding side, and raw material is facilitated to enter spinneret orifice 2.
Each spinneret 1 is equipped with 1160 spinneret orifices 2.
The production method for being used to produce dry acrylic fiber flat fiber includes the following steps:
1, stoste heats；
Heater heats stoste by steam and is heated to 125 DEG C, and heater is pharoid, radiant heating
The inner and outer tubes of device pass through the different steam of pressure respectively and are heated, and the pressure of inner tube steam is 166kpa, outer tube steam
Pressure is 76kpa, can make the pressure of the stoste of inner and outer rings different in this way, and the pressure for reaching spinneret 1 is different, is sprayed from passing through
The pressure that filament plate 1 sprays is also different, so that the speed in path is different, can guarantee the original sprayed by spinneret 1 in this way
Liquid by spinneret 1 path evaporation after obtain as-spun fibre speed it is identical.
Stoste after heating is transported in filter press, and is filtered by filter press, by the solid matter mistake in stoste
It filters out and, prevent the micropore 3 of solid matter blocking spinneret 1 from ensure that acrylic fiber to produce the acrylic fiber of substandard products
Quality stabilization.
2, spinneret；
Booster pump extracts filtered stoste, and stoste is conveyed to metering pump, and stoste is transported to spinneret 1 by metering pump
Upper carry out spinneret.The frequency of metering pump is 29Hz, since the spinneret orifice 2 on spinneret 1 is distributed on 11 concentric circles, every ring
The spin rate of spinneret orifice 2 is 31.8kg/h.
Booster pump can the stoste respectively to pharoid inner and outer tubes be pressurized, and make reach spinneret 1 on
The pressure of stoste maintain 600kpa, can guarantee that the stoste of inner and outer tubes is formed in path after the ejection of spinneret 1
The speed of as-spun fibre is identical.Metering pump can be good at the flow for the stoste for being transported to spinneret 1 being adjusted control, adjust
Section is convenient.
3, evaporation drying；
Spinneret 1 spray stoste enter in path, into the moisture in the stoste in path high-temperature gas effect
Lower rapid evaporation, to form the as-spun fibre of flat horizontal surface.
High-temperature steam includes main nitrogen and secondary nitrogen, and main nitrogen is passed through from the import in path, and the effect of main nitrogen is to make to spray
The moisture in the stoste of spinneret 1 quickly evaporates out, to form as-spun fibre.Secondary nitrogen is passed through from the outlet in path, secondary
The effect of nitrogen is the temperature guaranteed in path, avoids the steam in path from liquefying in path and is attached on the wall of path, is hindered
The production of as-spun fibre.The temperature of main nitrogen is 345 degrees Celsius, pressure 375mmH2O；The temperature of secondary nitrogen is 100 DEG C, pressure
Power is 100mmH2O。“mmH2O " is " millimeter of water ", the unit of pressure.
Path includes gas chamber, centrum, upper path top and upper 4th area of path lower part, and path is equipped with electric heater, can
Path is heated, to maintain certain temperature in path.The temperature of gas chamber is 335 DEG C, and the temperature of centrum is 215 DEG C,
The temperature on upper path top is 175 DEG C, and the temperature of upper path lower part is 145 DEG C.Due to main nitrogen enters behind path temperature can be by
Gradually reducing, the temperature in path is gradually lowered, and it is synchronous with the reduction of the temperature of main nitrogen, the main nitrogen in path can either be prevented in this way
The temperature decline of gas is too fast, causes the moisture in as-spun fibre to evaporate halfway problem, influences the quality of as-spun fibre.
4, drawing-off is washed；
The outlet in path is equipped with traction feeding machine, and as-spun fibre enters drawing-off in traction feeding machine, drawing-off temperature after washing
Degree is 75 DEG C, draw ratio 4.5.The frequency of drawing-off feeding machine is 33.5Hz, and the speed of belt is 320m/min.It is fed using traction
Enter machine to be drawn, facilitates the speed for adjusting and drawing.When needing acrylic fiber thinner, the drawing-off speed of traction feeding machine is improved
Degree；When the acrylic fiber of needs is thicker, the draft speed of traction feeding machine is reduced, it is easy to adjust.
5, it is packed in storage；
By the length cutting of the acrylic fiber after drawing-off as required, then it is packed in storage.
The production method of the dry method flat acrylic can be stable produce flatness be 5 ~ 7, line density be 3.0D ~ 5.0D
Dry method flat acrylic fiber, the needs for preventing industry can be met, while increasing differential kind, value-added content of product
Height, and have preferable economic and social benefit.
Embodiment 2
Production method for producing dry acrylic fiber flat fiber includes the following steps:
1, stoste heats；
Heater heats stoste by steam and is heated to 120 DEG C, and heater is pharoid, radiant heating
The inner and outer tubes of device pass through the different steam of pressure respectively and are heated, and the pressure of inner tube steam is 156kpa, outer tube steam
Pressure is 56kpa, can make the pressure of the stoste of inner and outer rings different in this way, and the pressure for reaching spinneret 1 is different, is sprayed from passing through
The pressure that filament plate 1 sprays is also different, so that the speed in path is different, can guarantee the original sprayed by spinneret 1 in this way
Liquid by spinneret 1 path evaporation after obtain as-spun fibre speed it is identical.
Stoste after heating is transported in filter press, and is filtered by filter press, by the solid matter mistake in stoste
It filters out and, prevent the micropore 3 of solid matter blocking spinneret 1 from ensure that acrylic fiber to produce the acrylic fiber of substandard products
Quality stabilization.
2, spinneret；
Booster pump extracts filtered stoste, and stoste is conveyed to metering pump, and stoste is transported to spinneret 1 by metering pump
Upper carry out spinneret.The frequency of metering pump is 29Hz, since the spinneret orifice 2 on spinneret 1 is distributed on 11 concentric circles, every ring
The spin rate of spinneret orifice 2 is 31.8kg/h.
Booster pump can the stoste respectively to pharoid inner and outer tubes be pressurized, and make reach spinneret 1 on
The pressure of stoste maintain 450kpa, can guarantee that the stoste of inner and outer tubes is formed in path after the ejection of spinneret 1
The speed of as-spun fibre is identical.Metering pump can be good at the flow for the stoste for being transported to spinneret 1 being adjusted control, adjust
Section is convenient.
3, evaporation drying；
Spinneret 1 spray stoste enter in path, into the moisture in the stoste in path high-temperature gas effect
Lower rapid evaporation, to form the as-spun fibre of flat horizontal surface.
High-temperature steam includes main nitrogen and secondary nitrogen, and main nitrogen is passed through from the import in path, and the effect of main nitrogen is to make to spray
The moisture in the stoste of spinneret 1 quickly evaporates out, to form as-spun fibre.Secondary nitrogen is passed through from the outlet in path, secondary
The effect of nitrogen is the temperature guaranteed in path, avoids the steam in path from liquefying in path and is attached on the wall of path, is hindered
The production of as-spun fibre.The temperature of main nitrogen is 340 degrees Celsius, pressure 365mmH2O；The temperature of secondary nitrogen is 95 DEG C, pressure
For 90mmH2O。
Path includes gas chamber, centrum, upper path top and upper 4th area of path lower part, and path is equipped with electric heater, can
Path is heated, to maintain certain temperature in path.The temperature of gas chamber is 330 DEG C, and the temperature of centrum is 210 DEG C,
The temperature on upper path top is 170 DEG C, and the temperature of upper path lower part is 140 DEG C.Due to main nitrogen enters behind path temperature can be by
Gradually reducing, the temperature in path is gradually lowered, and it is synchronous with the reduction of the temperature of main nitrogen, the main nitrogen in path can either be prevented in this way
The temperature decline of gas is too fast, causes the moisture in as-spun fibre to evaporate halfway problem, influences the quality of as-spun fibre.
4, drawing-off is washed；
The outlet in path is equipped with traction feeding machine, and as-spun fibre enters drawing-off in traction feeding machine, drawing-off temperature after washing
Degree is 65 DEG C, draw ratio 4.5.The frequency of drawing-off feeding machine is 33.5Hz, and the speed of belt is 320m/min.It is fed using traction
Enter machine to be drawn, facilitates the speed for adjusting and drawing.When needing acrylic fiber thinner, the drawing-off speed of traction feeding machine is improved
Degree；When the acrylic fiber of needs is thicker, the draft speed of traction feeding machine is reduced, it is easy to adjust.
5, it is packed in storage；
By the length cutting of the acrylic fiber after drawing-off as required, then it is packed in storage.
Embodiment 3
Production method for producing dry acrylic fiber flat fiber includes the following steps:
1, stoste heats；
Heater heats stoste by steam and is heated to 130 DEG C, and heater is pharoid, radiant heating
The inner and outer tubes of device pass through the different steam of pressure respectively and are heated, and the pressure of inner tube steam is 176kpa, outer tube steam
Pressure is 86kpa, can make the pressure of the stoste of inner and outer rings different in this way, and the pressure for reaching spinneret 1 is different, is sprayed from passing through
The pressure that filament plate 1 sprays is also different, so that the speed in path is different, can guarantee the original sprayed by spinneret 1 in this way
Liquid by spinneret 1 path evaporation after obtain as-spun fibre speed it is identical.
Stoste after heating is transported in filter press, and is filtered by filter press, by the solid matter mistake in stoste
It filters out and, prevent the micropore 3 of solid matter blocking spinneret 1 from ensure that acrylic fiber to produce the acrylic fiber of substandard products
Quality stabilization.
2, spinneret；
Booster pump extracts filtered stoste, and stoste is conveyed to metering pump, and stoste is transported to spinneret 1 by metering pump
Upper carry out spinneret.The frequency of metering pump is 29Hz, since the spinneret orifice 2 on spinneret 1 is distributed on 11 concentric circles, every ring
The spin rate of spinneret orifice 2 is 31.8kg/h.
Booster pump can the stoste respectively to pharoid inner and outer tubes be pressurized, and make reach spinneret 1 on
The pressure of stoste maintain 700kpa, can guarantee that the stoste of inner and outer tubes is formed in path after the ejection of spinneret 1
The speed of as-spun fibre is identical.Metering pump can be good at the flow for the stoste for being transported to spinneret 1 being adjusted control, adjust
Section is convenient.
3, evaporation drying；
Spinneret 1 spray stoste enter in path, into the moisture in the stoste in path high-temperature gas effect
Lower rapid evaporation, to form the as-spun fibre of flat horizontal surface.
High-temperature steam includes main nitrogen and secondary nitrogen, and main nitrogen is passed through from the import in path, and the effect of main nitrogen is to make to spray
The moisture in the stoste of spinneret 1 quickly evaporates out, to form as-spun fibre.Secondary nitrogen is passed through from the outlet in path, secondary
The effect of nitrogen is the temperature guaranteed in path, avoids the steam in path from liquefying in path and is attached on the wall of path, is hindered
The production of as-spun fibre.The temperature of main nitrogen is 350 degrees Celsius, pressure 385mmH2O；The temperature of secondary nitrogen is 105 DEG C, pressure
Power is 110mmH2O。
Path includes gas chamber, centrum, upper path top and upper 4th area of path lower part, and path is equipped with electric heater, can
Path is heated, to maintain certain temperature in path.The temperature of gas chamber is 340 DEG C, and the temperature of centrum is 220 DEG C,
The temperature on upper path top is 180 DEG C, and the temperature of upper path lower part is 150 DEG C.Due to main nitrogen enters behind path temperature can be by
Gradually reducing, the temperature in path is gradually lowered, and it is synchronous with the reduction of the temperature of main nitrogen, the main nitrogen in path can either be prevented in this way
The temperature decline of gas is too fast, causes the moisture in as-spun fibre to evaporate halfway problem, influences the quality of as-spun fibre.
4, drawing-off is washed；
The outlet in path is equipped with traction feeding machine, and as-spun fibre enters drawing-off in traction feeding machine, drawing-off temperature after washing
Degree is 99 DEG C, draw ratio 4.5.The frequency of drawing-off feeding machine is 33.5Hz, and the speed of belt is 320m/min.It is fed using traction
Enter machine to be drawn, facilitates the speed for adjusting and drawing.When needing acrylic fiber thinner, the drawing-off speed of traction feeding machine is improved
Degree；When the acrylic fiber of needs is thicker, the draft speed of traction feeding machine is reduced, it is easy to adjust.
5, it is packed in storage；
By the length cutting of the acrylic fiber after drawing-off as required, then it is packed in storage.
Comparative example 1
The spinneret orifice 2 of spinneret 1 used in embodiment 1 is the long straight hole that both ends are arc-shaped, and spinneret orifice 2 runs through spinneret
The processing step of plate 1, acrylic fiber production is same as Example 1, and the flatness of the acrylic fiber sprayed in this way is less than 5, product
It is unable to satisfy requirement.
Comparative example 2
The pressure of the inner tube steam of pharoid is 130kpa in embodiment 2, and outer tube steam pressure is 40kpa；From river in Zhejiang Province
The temperature of the road main nitrogen suitable for reading being passed through is 300 DEG C, pressure 310mmH2The temperature of O, the secondary nitrogen that Xia Kou is passed through from path is
80 DEG C, pressure 75mmH2O；Gas chamber, centrum, upper path top and the temperature of lower path lower part in path be respectively 300 DEG C,
180 DEG C, 140 DEG C and 100 DEG C, spinneret 1 used is constant, in this way can not be stable produce flatness be 5 ~ 7 acrylic fibers
Fiber.
Comparative example 3
The pressure of the inner tube steam of pharoid is 195kpa in embodiment 3, and outer tube steam pressure is 100kpa；From river in Zhejiang Province
The temperature of the road main nitrogen suitable for reading being passed through is 410 DEG C, pressure 400mmH2The temperature of O, the secondary nitrogen that Xia Kou is passed through from path is
120 DEG C, pressure 130mmH2O；Gas chamber, centrum, upper path top and the temperature of lower path lower part in path be respectively 380 DEG C,
270 DEG C, 210 DEG C and 170 DEG C, spinneret 1 used is constant, in this way can not be stable produce flatness be 5 ~ 7 acrylic fibers
Fiber.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (7)
1. a kind of production method of dry method flat acrylic, it is characterised in that: including spinneret (1), be spaced setting on spinneret (1)
Multiple spinneret orifices (2), spinneret orifice (2) are blind hole of the setting in spinneret (1) charging side, and the bottom of spinneret orifice (2) offers
Multiple micropores (3) through spinneret (1) discharging side, multiple micropores (3) are located along the same line, each spinneret orifice
(2) it is connected to three micropores (3), the micropore (3) is the linear long hole of both ends arc-shaped, and spinneret orifice (2) is straight
Linear long hole, three micropores (3) being connected to each spinneret orifice (2) are uniformly distributed along the long axis of spinneret orifice (2), and spinneret orifice (2) is
By charging side to the discharging gradually smaller taper in side, spinneret orifice (2) is evenly arranged on multiple concentric circles of spinneret (1), with
The tangent line weight of spinneret (1) concentric circles locating for the line of three micropores (3) of each spinneret orifice (2) connection and spinneret orifice (2)
It closes, includes the following steps:
Stoste heating: heater is heated to 120 ~ 130 DEG C to stoste, and is filtered to the stoste after heating；
Spinneret: booster pump is pressurized 450 ~ 700kpa to filtered stoste, and spinneret (1) spray is conveyed to after metering device
Silk；
Evaporation drying: the stoste that spinneret (1) sprays enters path, the rapid steaming under the action of high-temperature gas being passed through in path
Hair, forms the as-spun fibre of flat cross section；
Drawing-off: as-spun fibre drawing-off after washing is washed, acrylic fiber is obtained, drawing temperature is 65 ~ 99 DEG C；
Packaging and warehousing: the acrylic fiber after drawing-off is cut off after drying, is then packed in storage；
The high-temperature gas includes main nitrogen and secondary nitrogen, and the temperature of main nitrogen is 340 ~ 350 DEG C, and pressure is 365 ~
385mmH2O is passed through by the import in the path；The temperature of secondary nitrogen is 95 ~ 105 DEG C, and pressure is 90 ~ 110 mmH2O, by described
The outlet in path is passed through.
2. the production method of dry method flat acrylic according to claim 1, it is characterised in that: the heater passes through steaming
Vapour heats stoste.
3. the production method of dry method flat acrylic according to claim 2, it is characterised in that: the heater is spoke
Heater is penetrated, the inner tube steam pressure of pharoid is 156 ~ 176kpa, and outer tube steam pressure is 56 ~ 86kpa.
4. the production method of dry method flat acrylic according to claim 1, it is characterised in that: the path includes gas
Room, centrum, upper path top and upper 4th area of path lower part, the temperature in 4th area be respectively as follows: 330 ~ 340 degrees Celsius, it is 210 ~ 220 Celsius
Degree, 170 ~ 180 degrees Celsius and 140 ~ 150 degrees Celsius.
5. the production method of dry method flat acrylic according to claim 1, it is characterised in that: the metering device is meter
Amount pump, the frequency of metering pump are 29Hz.
6. the production method of dry method flat acrylic according to claim 1, it is characterised in that: the as-spun fibre is by leading
Draw feeding machine drawing-off, the frequency for drawing feeding machine is 33.5Hz, draw ratio 4.5.
7. the production method of dry method flat acrylic according to claim 1, it is characterised in that: the spinneret orifice (2) has
1160 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655929.2A CN106567148B (en) | 2015-10-13 | 2015-10-13 | A kind of production method of dry method flat acrylic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655929.2A CN106567148B (en) | 2015-10-13 | 2015-10-13 | A kind of production method of dry method flat acrylic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106567148A CN106567148A (en) | 2017-04-19 |
| CN106567148B true CN106567148B (en) | 2019-03-29 |
Family
ID=58506295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510655929.2A Active CN106567148B (en) | 2015-10-13 | 2015-10-13 | A kind of production method of dry method flat acrylic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106567148B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629027B (en) * | 2017-10-09 | 2021-10-22 | 中国石油化工股份有限公司 | Production method of dry acrylic fiber 1.33dtex staple fiber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558006A (en) * | 2004-01-13 | 2004-12-29 | 河北省秦皇岛腈纶厂 | Method for preparing dry-process acrylon fibre containing vinyl acetate |
| CN1740411A (en) * | 2005-09-09 | 2006-03-01 | 浙江金甬腈纶有限公司 | Dry spinning process of making bright polyacrylic fibre |
| CN1752301A (en) * | 2005-10-28 | 2006-03-29 | 浙江金甬腈纶有限公司 | Method for making acrylic fibre by fine denier dry method and spinning nozzle |
| CN101445967A (en) * | 2008-12-12 | 2009-06-03 | 浙江杭州湾腈纶有限公司 | Preparation method of flat acrylic fiber |
| CN103668523A (en) * | 2012-09-19 | 2014-03-26 | 中国石油化工股份有限公司 | Production method of dry-process acrylic fiber |
| CN103882547A (en) * | 2014-02-27 | 2014-06-25 | 宁波中新腈纶有限公司 | Flat acrylic fiber and production method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02169712A (en) * | 1988-12-16 | 1990-06-29 | Mitsubishi Rayon Co Ltd | Production of dry spun flat acrylic fiber |
-
2015
- 2015-10-13 CN CN201510655929.2A patent/CN106567148B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558006A (en) * | 2004-01-13 | 2004-12-29 | 河北省秦皇岛腈纶厂 | Method for preparing dry-process acrylon fibre containing vinyl acetate |
| CN1740411A (en) * | 2005-09-09 | 2006-03-01 | 浙江金甬腈纶有限公司 | Dry spinning process of making bright polyacrylic fibre |
| CN1752301A (en) * | 2005-10-28 | 2006-03-29 | 浙江金甬腈纶有限公司 | Method for making acrylic fibre by fine denier dry method and spinning nozzle |
| CN101445967A (en) * | 2008-12-12 | 2009-06-03 | 浙江杭州湾腈纶有限公司 | Preparation method of flat acrylic fiber |
| CN103668523A (en) * | 2012-09-19 | 2014-03-26 | 中国石油化工股份有限公司 | Production method of dry-process acrylic fiber |
| CN103882547A (en) * | 2014-02-27 | 2014-06-25 | 宁波中新腈纶有限公司 | Flat acrylic fiber and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106567148A (en) | 2017-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105239175B (en) | A kind of micro nanometer fiber yarn spinning apparatus and its spinning process | |
| CN102121173B (en) | Method for preparing sound-absorbing and heat-insulating materials formed by superfine fiber nonwovens | |
| CN102517680A (en) | Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device | |
| CN103088552B (en) | Manufacturing technology of polyethylene spunbond cloth | |
| CN102031575A (en) | Method for preparing superfine denier flat terylene drawn yarn | |
| CN102493016A (en) | Porous superfine polyamide 6 fully-drawn yarn, preparation method thereof, and equipment thereof | |
| CN103132248A (en) | Manufacturing equipment for elastic spun-bonded nonwovens and method for elastic spun-bonded nonwovens | |
| CN104389036A (en) | Preparation method of six-leaf porous hollow staple fibers spun from renewable polyester bottle flakes | |
| CN113174647A (en) | Process for producing colored polyester cotton-like special yarn | |
| CN110067032A (en) | The preparation method of trilobal cross polylactic acid pattern fiber | |
| CN207452312U (en) | Special-shaped drafting silk preparation facilities | |
| CN103374784A (en) | Production method of microdenier nylon fabric | |
| CN104651962A (en) | Double-component hollow high-moisture-absorption curly composite fiber and preparation method thereof | |
| CN106567148B (en) | A kind of production method of dry method flat acrylic | |
| CN103590140B (en) | A kind of imitative multiple polyisocyanate of linen look is combined short fibre and manufacture method thereof | |
| CN113089114B (en) | Process method for improving inherent quality uniformity of coarse denier porous special-shaped filament PET-POY | |
| CN103981580B (en) | A kind of polyamide 6 POY/FDY composite fibre and preparation method thereof | |
| CN104451919B (en) | A kind of production technology of the orderly terylene slub silk of isotactic | |
| CN102912464B (en) | A kind of thermoplastic spinning equipment | |
| CN103981586A (en) | Ultra-low differential shrinkage polyamide 6 composite fibers and preparation method thereof | |
| CN204752919U (en) | Circumference spinning subassembly | |
| CN105839207B (en) | It is ultralow to shrink the production method for having light FDY | |
| CN104451903A (en) | Circumferential spinning component | |
| CN104562240A (en) | U-shaped hollow Dacron draw-textured yarn and preparation method thereof | |
| CN109576815A (en) | A kind of polyester filament production method with along fibre length dyeing gradual change performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |